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US6513318B1 Expired / Lapsed US ⏱️ 0.0 years remaining

Low emissions gas turbine engine with inlet air heating

Assignee: Hybrid Power Generation Systems LLC
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Filing: 2000-11-29
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Granted: 2003-02-04
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Expires: 2020-11-29
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Abstract

Abstract A gas turbine engine includes, in flow series arrangement, a mixer, a compressor, a first flow path of a recuperator, a combustor, a turbine and a second flow path of said recuperator; and a bypass conduit between said turbine and said mixer. A valve is disposed in the conduit and is controlled by a temperature sensor mounted to sense compressor inlet air temperature. The sensor has a set point temperature that corresponds with optimum emissions from the engine. When the sensed temperature drops below the set point temperature the valve opens and hot air from the turbine flows to the mixer where it heats the air entering the compressor. A method for operating a gas turbine engine with preselected emissions over a range of ambient conditions is also disclosed.

Inventors

  • 👤 E. Scott Wright

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 19:38
CPC Classifications
F; F02; F02C; F02C3/00; F02C3/34; F02C7/00; F02C7/08; F02C7/10; F05; F05D; F05D2270/00; F05D2270/01; F05D2270/08; F05D2270/082; F05D2270/30; F05D2270/303

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 42 words
A gas turbine engine comprising, in flow series arrangement, a mixer, a compressor, a first flow path of a recuperator, a combustor, a turbine and a second flow path of said recuperator; and a bypass conduit between said turbine and said mixer.
Claim 2
Dependent Claim 42 words
A gas turbine engine comprising, in flow series arrangement, a mixer, a compressor, a first flow path of a recuperator, a combustor, a turbine and a second flow path of said recuperator; and a bypass conduit between said turbine and said mixer.
Claim 3
Dependent Claim 15 words
The gas turbine engine of claim 1 further comprising a valve disposed in said conduit.
Claim 4
Dependent Claim 25 words
The gas turbine engine of claim 2 further comprising a temperature sensor mounted to sense compressor inlet air temperature and having a set point temperature.
Claim 5
Dependent Claim 29 words
The gas turbine engine of claim 3 wherein said temperature sensor is configured so that when the sensed temperature is below the set point temperature the valve is open.
Claim 6
Dependent Claim 29 words
The gas turbine engine of claim 3 wherein said valve is controlled by an electronic control unit of the engine in response to a signal from said temperature sensor.
Claim 7
Dependent Claim 20 words
The gas turbine engine of claim 2 wherein said valve is proportionately controlled as a function of compressor inlet temperature.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 2006-02-03 2006-08-05 2007-02-04 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2010-02-03 2010-08-05 2011-02-04 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2014-02-03 2014-08-05 2015-02-04 $7700.00 Window Closed / Lapsed

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